diff --git a/security/manager/pki/resources/content/certManager.js b/security/manager/pki/resources/content/certManager.js
index eede37949ec8..ccbfe50c912b 100644
--- a/security/manager/pki/resources/content/certManager.js
+++ b/security/manager/pki/resources/content/certManager.js
@@ -88,7 +88,7 @@ function getSelectedTab()
     key = "?my_certs";
   } else if (selTabID == "websites_tab") {
     key = "?web_certs";
-  } else if (selTab == "ca_tab") {
+  } else if (selTabID == "ca_tab") {
     key = "?ca_certs";
   }  
   var context = helpURL + key;